P1口接8个发光二极管共阳,烧入下面程序#include <>unsigned char i;unsigned char temp;unsigned char a,b;void delay(void){unsigned char m,n,s;for(m=20;m>0;m--)for(n=20;n>0;n--)for(s=248;s>0;s--);}void main(void){while(1){temp=0xfe;P1=temp;delay();for(i=1;i<8;i++){a=temp<>(8-i);P1=a|b;delay();}for(i=1;i<8;i++){a=temp>>i;b=temp<<(8-i);P1=a|b;delay();}}}
lisabaobao99
